/* 公共代码 */
*{margin:0;padding:0}
ul,ol{list-style: none;}
a{text-decoration: none;}
img{display:block;}
input{border:none;outline: none;}
html,body{height:100%}
::-webkit-scrollbar{
    display: none;
}
body{
    display: flex;
    flex-direction: column;
}